a = 10
b = 9.8
s = 'hello'
print(type(a))
print(type(b))
print(type(s))

# 编写了一个Person类
class Person():
    pass

# 编写了一个Cat类
class Cat():
    pass

# 编写了一个Dog类
class Dog():
    pass

# 编写了一个Student类
class Student():
    pass

# 创建类的对象
per = Person()
c = Cat()
d = Dog()
stu = Student()

print(type(per))
print(type(c))
print(type(d))
print(type(stu))